It was a chain reaction. Long story short, the countries were pulled into the war because of agreements they had with their allies. This treaty is what caused the countries to enter WWI, to protect and defend their allied countries who were already in the war.
Aryan is a white person with blonde hair and blue eyes, nazis referred to all white people as aryans as hitler had brown hair and brown eyes
The answer is d I think but not sure
Yes, it is true .............